Salazar Slytherin built it under Hogwarts as a private HQ.

“Heir” would use a beast to purge Muggle-borns.

The Chamber housed a basilisk—deadly by gaze or fang.

Only a Parselmouth heir can open the Chamber and command the basilisk.

Riddle’s first attempt expelled Hagrid, but school sealed it.

1992: messages, petrifications—and Potter hears the snake.

Tom’s diary—his Horcrux—controlled Ginny to reopen the Chamber.

Harry slays the basilisk and destroys the diary—saving Hogwarts.

The physical Chamber remains—sealed but intact.

Prejudice, power & legacy—Chamber warns us: hidden hatred harms all.